雷子文 的英文怎麼說

中文拼音 [léiziwén]
雷子文 英文
ziwen lei
  • 雷 : 1. （雲層放電時發出的響聲） thunder 2. （軍事上用的爆炸武器） mine 3. （姓氏） a surname
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 文 : Ⅰ名詞1 （字） character; script; writing 2 （文字） language 3 （文章） literary composition; wri...
  1. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  2. But the signals mixture problem can be brought on by the drop of adaptive performance caused by using subarray and by overmany radiation sources. so bbs is used to solve the problem. this dissertation focuses on subarray architectures and the algorithms of ica, and proposes a new and more practical subarray architecture and a more suitable algorithm to separate radar signal

    同時針對採用子陣法導致自適應性能下降以及現代雷達信號環境多個輻射源等問題引起信號混疊現象，論文採用盲分離來對雷達信號進行分離處理，並針對雷達信號的特點提出一種適用的演算法。
  3. This article, through analysis different system radar ’ s superiority and limitation in target identification, proposes to unite the convention air defense radar ’ s echo characteristic and the electronic support sensory system ’ s aircraft - borne radiant characteristic, structure reasonable recognition system. it can satisfie the airplane target identification demand under the different background

    本文通過分析不同體制雷達在目標識別上的優勢和局限性，提出把常規防空雷達回波特徵和電子支援偵察系統得到的機載輻射源特徵聯合起來，構造合理的識別系統的新思路，以此來滿足不同背景下對飛機目標識別的需求。
  4. The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade

    葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題，本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上，建立了三維、可壓縮紊流的物理模型，得到了通用的求解辦法；利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型，計算了冷卻空氣通過這幾種通道時的流動與換熱情況，得到了各種不同情況下計算區域的溫度場、壓力場、速度場；在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的影響，並整理得到了各種通道形式下，努謝爾數和阻力因子與雷諾數的函數關系；本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果，通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較，表明了這種新型鮚構的優勢，對于葉片內部通道冷卻結構的設計可以起到指導的作用。
  5. The precise processing of the testing data is a crucial technique of this project, which is essential for reconstructing the flying behavior of tsp. the main tasks of this paper are ameliorating the black box sub - system and developing interface and transacting software of the ground laser radar

    對穩態掃描參數的測試數據進行精確處理，就能夠直觀再現末敏彈空中姿態；本文的工作就是完善、改進彈上黑匣子數據處理系統和開發地面激光雷達的介面和處理軟體。
  6. In this paper, by checking up the heat calculation about the experiment results of the single row tube and double waves belt, i come at the function of the heat transfer factor j and the reynolds number re, i also come at the function of the f r i ct i on factor ^ " and the reyno i ds number re

    本文還通過對單排雙波帶散熱器的實驗結果進行校核熱計算，回歸導出該種散熱器的傳熱因子j及摩擦因子f與雷諾數re的數學表達式，從而為用這種芯子根據廠家要求設計散熱器提供了理論依據。
  7. ". when imbudo entered within 256 kilometres of the observatory s radar coverage, we could clearly see the true face of imbudo. . " from mr. alan chui of the storm - chaser electronic monthly

    追擊風暴電子月刊崔偉江先生說：當伊布都進入天文臺256公里雷達監察范圍時，我們可清楚見到伊布都的真面目
  8. The effects of meteor trails scattering on a back scattering beyond - light - of - sight radar detected distance and probability of detection are creatively calculated in theory. it is practicable worth for analyzing the performance of the electronic systems

    本文第一次從理論上研究了流星余跡散射對電子系統性能影響，這些結果對研究突發通信系統和超視距雷達系統等電子系統的性能都有一定實用價值。
  9. And then, the cavity flow is simulated, and the streamline and pressure contour at different reynolds number are plotted, the stream function and location of vortex centers are agree well with the previous results, which indicate the incompressible lattice bgk model is reliable

    進而對方腔流的速度場和壓力場進行了計算，繪制了不同雷諾數下的流線圖及壓力等高線圖，得到的迴流渦的位置和流函數的值和現有的數據十分吻合，表明本文不可壓格子模型是可靠的。
  10. In this paper aircraft has made vertical and synthetic detecting flying purposefully on 9. 17, 2003 according to cloud ' s macro and microstructure. vertical layers and representative places of stratiform cloud on 9. 17, 2003 are analyzed using the observational data of particle measurement system ( pms ), combined with satellite data, radar data, and precipitation data on ground. by this we have got cloud ' s microphysical structure and physical process of the natural precipitation, and the physical effect evidence has been testified according to observational data after lco2 seeding

    本文用綜合觀測的方法，利用機載pms雲粒子探測系統，根據雲系的宏微觀結構特徵進行有針對性的垂直探測飛行，配合衛星、雷達、地面雨量、雨強計網觀測資料對2003年9月17日延安降水性層狀雲系中那些有代表性的部位或垂直分層做細致的觀測分析，獲得雲系的微物理結構和自然降水形成的物理過程，並用觀測事實來驗證人工增雨引晶催化后的物理響應判據。
  11. The main task of this dissertation is to model and simulate a monopulse radar system. in the end, we design a set of software platforms of a monopulse radar system, which would be a living, economical and convenient test platform for radar electronic warfare. firstly, this dissertation studies the model of radar signal environment

    本文的主要工作是對單脈沖雷達系統進行計算機建模和模擬，最終目的是開發出一套模擬單脈沖雷達系統工作模式的軟體模擬平臺，為雷達電子戰提供一個逼真、快捷、高效、經濟和方便的試驗平臺。
  12. In this dissertation, the data process ( dp ) subsystem and radar control program ( rcp ) subsystem of gbr simulation system have been studied and discussed. the main work and innovation of this dissertation is as follows : ( 1 ) track filter, the basic element of track system, has been researched. we analyze the advantage and disadvantage of common target kinematic model such as constant velocity model, constant acceleration model, noval statistic model

    本文是基於某gbr模擬系統的合作項目中，本人負責的數據處理子系統和雷達控製程序子系統的研究和開發的結果，主要進行的工作和創新有: （ 1 ）基於跟蹤系統最基本的要素-跟蹤濾波，分析了當前常用的微分多項式模型， cv與ca （常速與常加速）模型，時間相關模型， noval統計模型，以及機動目標「當前」統計模型等目標運動模型的優缺點和雷達的觀測誤差。
  13. The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided

    論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。
  14. True, the powlers and the scadgerses were accustomed to splendors, "but it is my duty to remember, " mrs. sparsit was fond of observing with a lofty grace: particularly when any of the domestics were present, "that what i was, i am no longer. "

    誠然，波雷家人和斯卡鳩士家人都習慣于闊綽的生活，「但是我有責任要記住，」斯巴塞太太喜歡擺出一種高貴的、溫文爾雅的派頭來說話--特別是有僕人在旁邊的時候，「我已經不是以前那個樣子了。」
  15. True, the powlers and the scadgerses were accustomed to splendors, " but it is my duty to remember, " mrs. sparsit was fond of observing with a lofty grace : particularly when any of the domestics were present, " that what i was, i am no longer.

    誠然，波雷家人和斯卡鳩士家人都習慣于闊綽的生活， 「但是我有責任要記住， 」斯巴塞太太喜歡擺出一種高貴的、溫文爾雅的派頭來說話- -特別是有僕人在旁邊的時候， 「我已經不是以前那個樣子了。 」
  16. This thesis is based on the project from the key laboratory of national defense in the 29th research institute - - - sar system for receiving and processing signal and its simulation research

    本文的研究來源於信息產業部電子第二十九所國防科技重點實驗室基金項目? ?合成孔徑雷達接收處理系統及其模擬研究。
  17. To meet the demand of thermal dispersion of some solid - state module, system research for thermal techniques is carried out, and the main contents are as follows … ( 1 ) the solid - state modules and interrelated thermal techniques are introduced on research background, and moreover developing tendencies of electronics cooling are described

    本文對某雷達發射固態組件的熱技術進行了系統的研究，主要內容包括: （ 1 ）對固態組件散熱技術的研究背景和意義進行了闡述，對電子散熱技術的現狀和發展趨勢進行了總結。
  18. Abstract the applied technology and a equipment are mentioned for protecting insulation overhead line from lightning strike breakdown in this paper

    摘要本文提出一種防止配電線路架空絕緣電纜雷擊斷線的實用技術和裝置，可有效地防止架空絕緣電纜雷擊斷線、絕緣子損壞等事故。
  19. This paper founds mathematical model of twin - floater ocean wave generate electricity device, and analyzes primary parameters on the base of mathematical model for searching the optimal solution during designing this electricity device. it presents the method calculating the ocean wave forces on the several ideal floaters such as cube, vertical cylinder, horizontal cylinder, sphere by the theory that froude - krylow presupposition calculates a big diving body

    在研究浮子幾何形狀與浮子所受波浪力的關系的過程中，本文利用弗汝德-克雷洛夫假定法計算大尺度潛體上的波浪力的思想理論來推導作用在幾種常見理想浮體：長方體、垂直圓柱體、水平圓柱體和球體上的垂直波浪力。
  20. We are especially grateful to scriptwriter liu damu and art director bill lui, who also contributed essays to this book, liu not only writes about his days eating and drinking with tsui, he also provides a transcript of a brainstorming session, taking us back in time to witness tsui s mind at work

    劉大木和美術指導雷楚雄更為本書撰文，我們不勝感謝。劉大木不僅追溯和徐克一起吃喝的日子，還給我們筆錄編劇會議一段腦力激蕩的對話，讓大家返回昔日時光，見證徐克怎麼構思故事。
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